<template>
  <el-container class="home-container">
    <!-- 头部 -->
    <el-header>
      <div>
        <img src="../assets/logo.png" alt="" />
        <span>商城后台管理系统</span>
      </div>
      <el-button type="info" @click="logout()">退出</el-button>
    </el-header>
    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width="isCollapes ? '64px' : '200px'">
        <div class="taggle-button" @click="toggleCollapse()">|&nbsp;|&nbsp;|</div>
        <el-menu
          class="el-menu-vertical-demo"
          background-color="#333744"
          text-color="#fff"
          active-text-color="#409eff"
          unique-opened
          :collapse="isCollapes"
          :collapse-transition="false"
          :router="true"
          :default-active="activePath"
          >
          <!-- 一级菜单 -->
          <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id" >
            <!-- 一级菜单的模块区域 -->
            <template #title>
              <!-- 图标 -->
              <i :class="iconsObj[item.id]"></i>
              <!-- 文本 -->
              <span>{{item.authName}}</span>
            </template>
            
            <!-- 二级菜单 -->
            <el-menu-item :index="'/' + subitem.path + ''" v-for="subitem in item.children" :key="subitem.id" @click="saveNavState('/' + subitem.path)">
              <template #title>
                <!-- 图标 -->
                <i class="el-icon-menu"></i>
                <!-- 文本 -->
                <span>{{subitem.authName}}</span>
              </template>
             </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 主体 -->
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  name: "Home",
  data() {
    return {
      // 左侧菜单数据
      menulist: [],
      // 图标数据
      iconsObj: {
        '125': 'el-icon-user-solid',
        '103': 'el-icon-s-opportunity',
        '101': 'el-icon-s-goods',
        '102': 'el-icon-s-order',
        '145': 'el-icon-s-marketing'
      },
      // 收缩
       isCollapes: false,
      //  被激活的链接地址
       activePath: ''
    }
  } ,
  
  created() {
    this.getMenuList(),
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    logout() {
      window.sessionStorage.clear();
      this.$router.push("/login");
    },
    // 获取所有菜单
    async getMenuList() {
      const { data: res } = await this.$http.get('menus')
      if(res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.menulist = res.data
      console.log(res)
    },
    // 点击按钮，切换菜单的折叠与展开
    toggleCollapse() {
      this.isCollapes = !this.isCollapes
      
    },
    // 保存链接的激活状态
    saveNavState(activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
  },
};
</script>

<style>
.home-container {
  height: 100%;
}
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #fff;
  padding-left: 0;
  font-size: 18px;
}
.el-header div {
  display: flex;
  align-items: center;
}
.el-header div span {
  margin-left: 15px;
}
.el-header div img {
  width: 60px;
  height: 60px;
}

.el-aside {
  background-color: #333744;
}
.el-aside .el-menu {
  border-right: none;
}
.el-main {
  background-color: #eaedf1;
}
.taggle-button {
  background-color: #4a5064;
  color: #fff;
  font-size: 10px;
  line-height: 24px;
  text-align: center;
  cursor: pointer;
  
}

</style>